Apparatus for the production of artificial threads.



PATENTED JULY 31, 1906. E. W. FRIEDRICH. APPARATUS FOR THE PRODUCTION OF ARTIFICIAL THREADS.

APPLICATION FILED AUG. 22, 1905.

. INVENTOR W M; 4M

Anon/ms! UNITED STATES PATENT OFFICE.

.ERNST 'WILLY FRIEDRICH, OF BLATON,. BELGIUM,

' APPARATUS FOR'THE PRODUCTION OF ARTIFICIAL THREADS.

Specification of Letters Patent.

Patented July 31, 1906.

n m nfi .kugust22,1905. Serial No. 275,229. I

To all whom it may concern:

Be it known that I, ERNST WILLY FRIED- RICH, a subject of the German Emperor, and -a resident of Blaton, in the Kingdom of Belgium, have invented new and useful Improvements in Apparatus for the Production of- Artificial Threads, of which the'following is a full, clear, and exact specification.

T1118 invention relates to an im roved apparatus for the production 0 artlficial threads. In this apparatus the separate threads which are obtained from a so ution of cellulose are conducted into a coagulatingbath in the known manner and are then twisted to ether by the movement of the l quid in suc a manner that the twisting does not occur until the threads have already been hardened by contact with the coagulating liquid. In this manner the mming together of the separate threads, as well as the reaking of the same, are avoided, and therefore the objectionable features of such a paratus as were used heretofore, and in w ch the whole of the liquid is caused to rotate or in which the mouthpiece or nozzle through which the cellulose solution issues is caused to rotate in the liquid, so that the separate threads are twisted together as soon as they issue into the liquid, and the threads maybe broken b the liquid moving in a direction perpendlcular or nearly pe endicular to the directioni of movement 0 the threads, are obvi ate My improved apparatus is shown in the accompanying drawing, which represents a vertical central section of the same.

11 represents a tube throu h which the cellulose solution from which t e threads are to be made is supplied to the apparatus, b is a mouthpiece or nozzle which contains a number of fine openings through which the cellulose solution issues, and c is a tube into which the coagulating liquid enters through a pipe d, which is arranged at right angles to the pipe 0. The upper part of the tube 0 is provided with an interior helical oove which extends nearly up to a funnel-s aped vessel f, from the upper end of which a tube g extends in downward direction, so as to draw off the coagulating liquid. h is a roller upon which the thread is wound up or con-' ducted away.

The cellulose solution from which the threads are to be produced issues from the tube a throu h a number of fine a ertures in the nozzle 1) lnto the tube a, to which at the same time the coagulatingli'quid is supplied through the 1pipe d. The threads issum from the nozz e are coagulated'or hardene by the coagulating liquid as it passes with them in upward direction in the tube 0 in a direction parallel to the axis of the same.

The threads are twisted together on entering with the coagulating liquid into the interiorly-grooved portion e of the'tube c, which, owmg to its interior helical groove, im arts a rotational movement to the liquid. 11 case one of the threads is ruptured by the rotation imparted to them by the liquid the broken portion is immediately twisted again onto the main thread. The threads can be twisted around each other as frequently as desired by theproperly-selected number of turns or windings in the helical groove portion in the tube a. This cannot be accomplished in apparatus in which the entire body of the liquid 1s rotated.

The finished thread issues from the upper art of the apparatus at f, while the coaguatin liquid 1s drawn off through the pipe 9. The t ead is wound-upon the roller h or conducted away by the same.-

It is not essential that in the manufacture of threads by the apparatus shown the movement of the threads and of the coa ulati'ng liquid should be from the lower en of the apparatus upward, as described. The same may also be moved in downward direction for the reason that thereby theformation of air-bubbles in the tubes 1s avoided. Moreover, the movement of the liquid from below in upward direction is in accord with the natural tendency of the thread to rise in the liquid, owing to its low specific gravity.

The essential characteristic of my improved apparatus is that in the same the twisting together of the separate threads does not occur until every separate thread is coagulated and hardened, so that the gumming' together of the threads is obviated.

Having thus described my invention, I claim asnew and desire to secure by Letters Patent- 1. In an apparatus for the manufacture of artificial threads, the combination of a su ly-tube for the cellulose solution, a nozz e having capillary apertures through which ITO the separate threads are issued, and a tube through which the coagulating li uid flows in a direction parallel to the axis 0 the tube and to the direction of the movement of the threads, the upper portion of the coagulating-tube being provided with an interior helica groove for imparting a rotational movement to the coagulating li uid.

2. In an apparatus for t e manufacture of artificial threads, the combination of a supplyipe for the cellulose solution, a nozzle on sai supplgipipe having capillary openings through w 'ch the separate threads issue, a vertical tube connected with the supplyipe through which the coagulating liquid (MS in upward direction parallel to the axis of the tube and parallel to the direction of movement of the threads, the upper portion of the vertical tube b'eing rovided with an interior helical groove, an a funnel-shaped liquid vessel in the upper part of the coagulatingtube provided with a discharge-tube for the coagu ating liquid.

In testimon that I claim the foregoing as my invention have signed my name in presence of two subscribing witnesses.

ERNST WILLY FRIEDRICH.

Witnesses Geo. W. Roosmvsm GREGORY PHELAN. 

